<!DOCTYPE html>
<html lang="en">
<head>
    <meta name="viewport"
          content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no"/>
    <meta charset="UTF-8">

    <title>Title1</title>
</head>
<body>
<script>
    location.href="./_book/index.html"
</script>
</body>
</html>